Sucker-rod



(No Model.)

H. BLACK.

' SUGKER ROD.

1%. 334,929. Patnted Jan. 26, 1886.

INV'ENTOR 5 NrTEn STATES PATENT @rrrcn.

ROBERT HARPER BLACK, OF KENDALL CREEK, PENNSYLVANIA.

SUCKER ROD.

SPECIFICATIQN forming par. of Letters Patent No. 334,929, dated January26, 1886. Application filed October 1'7, 1885. Serial No. 180,181. (Nomodel.)

To all whom it may concern.-

Be it known that I, ROBERT HARPER BLACK, ofKenda1lCreek,in the county ofMcKean and State of Pennsylvania, have invented a new and usefulImprovement in Sucker-Rods for Oil and other Wells, which improvement isfully set forth in the following specification and accompanyingdrawings, in which Figure 1 is a perspective view of my improvedsucker-rod with the sections detached; Fig. 2, a perspective view of therod, showing completed weld; and Fig.3, a perspective view of a sectionof the rod somewhat modified.

My invention relates to an improvement in sucker-rods so formed as toreduce the weight of the body as far as possible, and at the same timeincrease its rigidity; and to this end I form the rod I-shaped inerosssection, and also form the coupling with a wedge-shaped opening, soas to embrace the webbed portion of the rod.

In the accompanying drawings, A represents an ordinary sucker-rodcoupling, one end, B, threaded. The other end, 0, is provided withawedge-shaped opening,D,therein, as shown in Fig. 1. The main portion ofthe body E of the rod is formedl shaped in crosssection, so that thepoint of greatest strain namely, the outer portion, F, of the rod-willhave the greatest amount of material. The web G, connecting these wings,may be either formed with parallel sides, as shown in Figs.

1 and 2, or, as I sometimes prefer it, formed with a core, H, centrally,as shown in Fig. 3.

In making the weld the wedge-shaped opening D in the end 0 of thecoupling A is designed to receive the Web G of the rod E, which is thusforged thereto between the wings of the sides F, which thus makes asolid and permanent Weld, as shown in Fig. 2.

What I claim as new is- 1. In a suckerrod, the body portion composed ofa bar of metal formed I-shaped, so that a welding web portion may beembraced by the wings of the coupling, substantially as herein Setforth.

2. In a sucker-rod, the coupling with a wedge shaped opening to embracethe Web of the rod between the wings, and thus form a solid Weld,substantially as herein set forth and described.

3. The combination, in a sucker-rod, ofthe coupling A, having therein atone end the wedge-shaped opening D, so disposed that the web G of thesaid rod may be interposed between the wings of the coupling, the wholearranged as and for the purpose substantially as herein set forth anddescribed.

.In testimony that I claim the foregoing I have hereunto set my hand,this 15th day of August, 1885, in the presence of witnesses.

ROBERT HARPER BLACK.

\Vitnesses:

R. G. BAILEY, H. H. NORTH.

